64332253 has 4 divisors (see below), whose sum is σ = 64969308. Its totient is φ = 63695200.

The previous prime is 64332227. The next prime is 64332269. The reversal of 64332253 is 35223346.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30946969 + 33385284 = 5563^2 + 5778^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64332253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64342253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318376 + ... + 318577.

It is an arithmetic number, because the mean of its divisors is an integer number (16242327).

Almost surely, 2^64332253 is an apocalyptic number.

It is an amenable number.

64332253 is a deficient number, since it is larger than the sum of its proper divisors (637055).

64332253 is a wasteful number, since it uses less digits than its factorization.

64332253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637054.

The product of its digits is 12960, while the sum is 28.

The square root of 64332253 is about 8020.7389310462. The cubic root of 64332253 is about 400.6909993623.

Adding to 64332253 its reverse (35223346), we get a palindrome (99555599).

It can be divided in two parts, 643 and 32253, that added together give a triangular number (32896 = T₂₅₆).

The spelling of 64332253 in words is "sixty-four million, three hundred thirty-two thousand, two hundred fifty-three".